70岁的退休干部老王向法院起诉请求其子女履行赡养义务，其子女认为父亲有足够的退休工资养活自己，拒绝履行赡养义务。其子女的抗辩理由成立。
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（）是被路由的协议。
A. RIP
B. OSPF
C. RIP和OSPF都是
D. RIP和OSPF都不是
（）在自治系统之间路由流量
A. BPG
B. EGP
C. IPP
D. IGP
哪一个路由协议的AD值最小？
A. OSPF
B. RIPV1
C. EIGRP
D. IS-IS
Which statement is true when there are multiple route statementsfrom different routing protocols for the same destination network?
A. The route is chosen with the highest administrative distance.
B. The route chosen has the lowest metric.
C. The route is chosen with the lowest administrative distance.
D. The route chosen has the highest metric.
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